{
  "abstract": "Purpose Non-communicable diseases (NCDs), such as diabetes, cardiovascular diseases and cancer, are major global public health concerns. Diet quality—particularly the consumption of ultra-processed foods—has been associated with increased risk of NCDs. Traditional cohort studies are often expensive and logistically complex. The NutriNet-Brasil cohort leverages a web-based approach, offering a cost-effective and practical solution for comprehensive data collection and long-term follow-up.Participants Recruitments began in January 2020 through mass media, social media campaigns and collaborations with health organisations. Eligible participants are adults (aged ≥18 years) living in Brazil with internet access. Participants complete self-administered online questionnaires covering dietary intake, health status and other health determinants. Dietary assessment is based on the Nova classification system, which categorises foods by their level of processing.Findings to date Over 88 000 participants have completed the initial questionnaire. The cohort is predominantly women (79.9%) and highly educated (67.9% had completed higher education). The web-based design enabled the development and application of innovative dietary assessment tools, including the Nova24h and the Nova24hScreener, specifically designed to evaluate food processing levels. These tools have shown good performance in capturing dietary patterns and are central to the cohort’s aim. The online platform facilitates efficient recruitment, data collection and participant retention.Future plans NutriNet-Brasil is pioneering the development of web-based cohort methodologies and instruments tailored to food processing research. Future work includes leveraging collaborations with national and international research centres to conduct multidisciplinary analyses and inform public health policies.",
  "authors": [
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil"
      ],
      "name": "Caroline dos Santos Costa"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "School of Public Health, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Kamila Tiemann Gabe"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Nutrition, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil"
      ],
      "name": "Francine Silva dos Santos"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Maria Alvim Leite"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "School of Public Health, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Fernanda Paranhos Quinta"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Beatriz Menezes de Albuquerque Torquato"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "School of Public Health, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Euridice Martinez Steele"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Fernanda Rauber"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Preventive Medicine, Federal University of Sao Paulo, São Paulo, SP, Brazil",
        "Chronic Disease Epidemiology Research Center, Federal University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Leandro F M Rezende"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "School of Public Health, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Maria Laura da Costa Louzada"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil",
        "Institute of Biomedical Research of Salamanca, University of Salamanca, Salamanca, CL, Spain"
      ],
      "name": "Renata B Levy"
    },
    {
      "affiliations": [
        "Center for Epidemiological Studies in Health and Nutrition, University of São Paulo, São Paulo, Brazil",
        "School of Public Health, University of São Paulo, São Paulo, SP, Brazil"
      ],
      "name": "Carlos A Monteiro"
    }
  ],
  "title": "NutriNet-Brasil, a web-based prospective study on dietary patterns and risk of chronic diseases: cohort profile",
  "uid": "fd8cf290-e416-5ce5-a26a-2f7cecc68269"
}